JavaScriptCore-7601.1.46.3.tar.gz

[apple/javascriptcore.git] / jit / JITExceptions.cpp

diff --git a/jit/JITExceptions.cpp b/jit/JITExceptions.cpp
index 46f59a3a9d976c5ddc7fcfe8285075da6be5a6dc..4f6d9e8f02908ca8bb4bf14495ba52a5f89f3d7b 100644 (file)
--- a/jit/JITExceptions.cpp
+++ b/jit/JITExceptions.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2012 Apple Inc. All rights reserved.
+ * Copyright (C) 2012, 2013 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
@@ -29,44 +29,47 @@
 #include "CallFrame.h"
 #include "CodeBlock.h"
 #include "Interpreter.h"
+#include "JITStubs.h"
 #include "JSCJSValue.h"
+#include "LLIntData.h"
+#include "LLIntOpcode.h"
+#include "LLIntThunks.h"
+#include "Opcode.h"
+#include "JSCInlines.h"
 #include "VM.h"
-#include "Operations.h"
-
-#if ENABLE(JIT) || ENABLE(LLINT)
 
 namespace JSC {
 
-ExceptionHandler genericThrow(VM* vm, ExecState* callFrame, JSValue exceptionValue, unsigned vPCIndex)
+void genericUnwind(VM* vm, ExecState* callFrame)
 {
-    RELEASE_ASSERT(exceptionValue);
+    if (Options::breakOnThrow()) {
+        dataLog("In call frame ", RawPointer(callFrame), " for code block ", *callFrame->codeBlock(), "\n");
+        CRASH();
+    }
     
-    vm->exception = JSValue();
-    HandlerInfo* handler = vm->interpreter->throwException(callFrame, exceptionValue, vPCIndex); // This may update callFrame & exceptionValue!
-    vm->exception = exceptionValue;
+    Exception* exception = vm->exception();
+    RELEASE_ASSERT(exception);
+    VMEntryFrame* vmEntryFrame = vm->topVMEntryFrame;
+    HandlerInfo* handler = vm->interpreter->unwind(vmEntryFrame, callFrame, exception); // This may update vmEntryFrame and callFrame.
 
     void* catchRoutine;
     Instruction* catchPCForInterpreter = 0;
     if (handler) {
         catchPCForInterpreter = &callFrame->codeBlock()->instructions()[handler->target];
-        catchRoutine = ExecutableBase::catchRoutineFor(handler, catchPCForInterpreter);
+#if ENABLE(JIT)
+        catchRoutine = handler->nativeCode.executableAddress();
+#else
+        catchRoutine = catchPCForInterpreter->u.pointer;
+#endif
     } else
-        catchRoutine = FunctionPtr(LLInt::getCodePtr(ctiOpThrowNotCaught)).value();
+        catchRoutine = LLInt::getCodePtr(handleUncaughtException);
     
+    vm->vmEntryFrameForThrow = vmEntryFrame;
     vm->callFrameForThrow = callFrame;
     vm->targetMachinePCForThrow = catchRoutine;
     vm->targetInterpreterPCForThrow = catchPCForInterpreter;
     
     RELEASE_ASSERT(catchRoutine);
-    ExceptionHandler exceptionHandler = { catchRoutine, callFrame };
-    return exceptionHandler;
-}
-
-ExceptionHandler jitThrow(VM* vm, ExecState* callFrame, JSValue exceptionValue, ReturnAddressPtr faultLocation)
-{
-    return genericThrow(vm, callFrame, exceptionValue, callFrame->codeBlock()->bytecodeOffset(callFrame, faultLocation));
-}
-
 }
 
-#endif
+} // namespace JSC